//: [Previous](@previous)

import Foundation

/// For 循环
/*:
 for i in 0..<n

 for i in (0..<n).reversed()

 for i in stride( from : 0 , through : 10 ,  by : 2)

 */

/// 排序
/*:
 nums.sorted()
 nums.sorted(<)

 /// 字符串转数组
 let chars = Array(S)

 */

//: [Next](@next)
